In the present research work, (titanium (Ti) + magnesium antimonide (Mg₃Sb₂)/magnesium (Mg) composites with Ti contents of 0, 5%, 10%, and 15% (mass fraction, %) were fabricated by powder metallurgy. The effect of different Ti contents on the microstructure and mechanical properties of (Ti + Mg₃Sb₂)/Mg composites was investigated. The results show that the volume of Mg₃Sb₂ compounds can be significantly refined and the distribution uniformity of Mg₃Sb₂ compounds can be improved by adding an appropriate amount of Ti. Part of Sb reacts with Ti in situ to form TiSb₂ compounds at the periphery of Ti particles. However, the reaction is not sufficient, and there is still the remaining Ti distribution in composites. Both Ti particles and TiSb₂ compounds form (Ti + TiSb₂) microstructures, which have different degrees of agglomeration with the increase of Ti contents in composites. The appropriate amount of Ti can improve the mechanical properties of the composite, but excessive Ti can reduce the tensile strength of the composite.

在本研究工作中，通过以下方法制备了Ti含量为0、5％，10％和15％（质量分数，％）的（钛（Ti）+锑化镁镁（Mg ₃ Sb ₂）/镁（Mg））。研究了不同的Ti含量对（Ti + Mg ₃ Sb ₂）/ Mg复合材料的显微组织和力学性能的影响，结果表明，Mg ₃ Sb ₂化合物的体积可以显着细化，分布均匀Mg ₃ Sb ₂化合物的含量可以通过添加适量的Ti来改善，部分Sb与Ti原位反应形成TiSb ₂Ti颗粒外围的化合物。然而，该反应不足，并且在复合物中仍然存在剩余的Ti分布。Ti颗粒和TiSb ₂化合物均形成（Ti + TiSb ₂）微观结构，随着复合材料中Ti含量的增加，它们具有不同的团聚度。适当量的Ti可以改善复合材料的机械性能，但是过量的Ti可以降低复合材料的拉伸强度。